Yes, but let me explain what a concern letter is. It's not necessarily saying that we're not going to accept this aircraft. We're saying there are some things we need to better understand and some things we don't agree with. That's an ongoing process. It happens as part of the normal certification. It can also happen the other way around. When we certify an aircraft, another country may have some questions to ask. It's a very complex, a very technical process.
On March 12th, 2020. See this statement in context.